Have you ever tasted these tiny, dark, juicy fruits? They may look unusual when you see them piled together, but they are black mulberries, commonly associated with Morus nigra. They are one of the most delicious seasonal fruits and have been enjoyed for generations in many parts of the world.
Their deep purple-black color is not just beautiful. Black mulberries are naturally rich in plant compounds called anthocyanins, which are responsible for much of their dark color and antioxidant activity.
Although social media posts sometimes claim that mulberries can restore eyesight or cure high blood pressure, those claims go far beyond what current research proves. Mulberries can be a nutritious addition to a balanced diet, but they should not replace prescribed treatment or medical care.
What Are Black Mulberries?
Black mulberries are small fruits that grow on mulberry trees. When they are unripe, they can be lighter in color and relatively firm. As they mature, they become dark purple or almost black, very soft, juicy, and sweet with a slightly tart flavor.
They are particularly delicate when fully ripe, which is why freshly picked mulberries often look much softer than fruits such as apples or grapes.
Black mulberries contain various nutrients and bioactive compounds, including fiber, vitamin C, minerals, phenolic compounds, flavonoids, and anthocyanins.
Why Are They So Dark?
The beautiful dark color of black mulberries comes largely from anthocyanins, a group of naturally occurring pigments belonging to the polyphenol family.
Research has identified several anthocyanins in black mulberries, with cyanidin-based compounds among the major pigments. These compounds have antioxidant properties and are one reason mulberries have attracted scientific interest.
Antioxidants help protect cells from oxidative stress, although eating an antioxidant-rich fruit does not mean that it can prevent or cure a particular disease.
Can Black Mulberries Improve Eyesight?
This is one of the most popular claims made about dark berries.
Anthocyanins have been investigated for their potential effects on eye health, retinal circulation, and oxidative stress. Laboratory and experimental research suggests that anthocyanin compounds may have protective effects involving the eyes.
However, there is an important difference between supporting normal health and improving or restoring eyesight.
There is currently not enough human evidence to say that eating black mulberries will restore vision, eliminate the need for glasses, or treat an eye disease. If someone has blurred vision, declining eyesight, eye pain, or another visual problem, they should have it properly evaluated rather than relying on fruit as treatment.
Do Black Mulberries Help With Blood Pressure?
Another frequently repeated claim is that mulberries can regulate blood pressure.
There is some scientific interest in this area. A randomized clinical trial involving people with dyslipidemia investigated blackberry/mulberry juice consumption over eight weeks and measured several cardiovascular markers, including blood pressure. The researchers reported some favorable changes in cardiovascular-related measurements, although this type of evidence does not establish that mulberries are a treatment for hypertension.
So, black mulberries can reasonably be included as part of a heart-healthy eating pattern, but people taking blood-pressure medication should not stop or change their medication because they are eating mulberries.
How to Eat Fresh Black Mulberries
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